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Work done by Pipe A in 1 hour = 1/10. Work done by Pipe B in 1 hour = 1/15. Work done by Pipe C in 1 hour = -1/30. Net work done in 1 hour = 1/10 + 1/15 - 1/30. Finding LCM of 10, 15, and 30 = 30. Net work = (3 + 2 - 1)/30 = 4/30 = 2/15. Time taken to fill the tank = 15/2 = 7.5 hours. Correct Option: b) 7.5 hours
Select the most appropriate option to fill in the blank.
By next year, Rohit will have_________his graduation
Fill in the blank with the most appropriate word.
As soon as Hitler came to power he started ______ the Jews.
Sentences are given below with a blank. Fill in these blanks with the appropriate option.
The friendly neighbor's __________ gesture of offer...
In …….. days of commercialization of medical profession, the likes of him were rare ……….
Scientists, __________ one of Indian origin, have __________ an ultra-thin device that can power your smartphone, fitness tracker and other gadgets usi...
It is important to understand just how ________ is the state of India’s environment.
But some of the works have a softer edge, and these still-mysterious iconic works ___________ a land of vaudevillian conjuring and a world of wonders.
The need to remember and manage a complex ________________ of relationships might have helped certain members of the animal kingdom drive the __________...
The amount of water ________ by the United Nations for drinking, washing, cooking and ________ proper hygiene is a minimum of 50 litres per person per ...
Winding through dense woodlands of pine, deodar and oak, a five-kilometre road connects the two ridges. Secluded and shaded in daytime, it is unlit at ...
